Test method and tester for high frequency pulse signal

Abstract

The invention discloses a test method and a tester for a high frequency pulse signal. The frequency, the duty ratio, the amplitude, the rise time and other parameters of the high frequency pulse signal can be measured at high speed and high precision through the core of FPGA and real-time communication between the FPGA and a microcomputer. Through a high-speed comparator, input high frequency pulse signals of different amplitudes are rectified into square wave signals between 0 and 3.3V. The FPGA is input to measure the frequency and the duty ratio. Standard pulse signals are provided by standard rectangular pulse signal system parameter tests. The signal instantaneous amplitude is input into the microcomputer through A / D conversion. The microcomputer directly carries out data sampling and processing to acquire the high frequency signal amplitude. The microcomputer outputs threshold voltage of 10% and 90% amplitudes to the comparator. Two rectified signals are sent into the FPGA. A time interval measuring method is used to acquire the rise time. According to the invention, high-speed and high-precision test of the high frequency pulse signal can be realized.

Description

technical field [0001] The invention relates to a high-precision rapid testing method and a testing instrument for high-frequency pulse signals, belonging to the field of electronic signal parameter testing. Background technique [0002] With the rapid development of modern electronic technology, the requirements for the measurement accuracy and speed of pulse signals are getting higher and higher. Serious threat to the electromagnetic environment, the radar radiation source has the characteristics of high density, full frequency band coverage, frequency agility, and repetition frequency change. By measuring the parameters of the radar video pulse signal, the pulse frequency, pulse amplitude, pulse rise time and pulse frequency can be obtained. Width and other time-domain parameters, to obtain information such as the model and threat level of the enemy's radiation source, so as to identify and locate the target [0003] Pulse signals contain rich high frequency and low freq...

AI Technical Summary

Problems solved by technology

However, at present, the oscilloscope is traditionally used to test several parameters of the signal, which often fails to achieve a comprehensive grasp of the pulse signal

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